build(deps): bump certifi in /20-executors/getflags

Bumps [certifi](https://github.com/certifi/python-certifi) from 2021.5.30 to 2022.12.7.
- [Release notes](https://github.com/certifi/python-certifi/releases)
- [Commits](certifi/python-certifi@2021.05.30...2022.12.07)

---
updated-dependencies:
- dependency-name: certifi
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

20-executors/getflags/requirements.txt

@@ -1,5 +1,5 @@
 anyio==3.3.2
-certifi==2021.5.30
+certifi==2022.12.7
 charset-normalizer==2.0.6
 h11==0.12.0
 httpcore==0.13.7